For example, mentioning how irrational is that to this day GIMP has no dedicated tool to draw basic geometric shapes (rectangles, ovals) as every other image editor does, even the most basic ones, can get you a lecture about how GIMP is free software, its lack of funding, that (allegedly) those tools are irrelevant and go against their philosophy, downvotes, bans...
>GIMP is free software, its lack of funding, that (allegedly) those tools are irrelevant
If you have a specific feature request, you might consider checking the bug tracker for an existing issue. If there is one, then it's not helpful to mention it any further. The developers already know what the request is. From that point on the only helpful thing you can do is to contribute code, designs, etc towards getting the feature done.
To illustrate, have you ever had somebody sitting behind you while you work who keeps repeatedly saying things like "are you working on that thing for me yet? are you done yet? when will you be done?" until you finish? It's kind of like that. Doing that doesn't help the person go any faster.